Typewriting machine



menace by a reverse movement of the finger-piece to withdraw the guide-sheet to its normally retracted position.

6. In a front-strike typewriting machine, in combination, a rotative platen, a downwardly and forwardly inclined rear papertable at the rear of the platen, a curved paper-apron beneath the platen, releasable feed-rolls co-operative with the lower side of the platen, a guide-sheet insertable from the rear between the platen and. the paperapron when the feed-rolls are cast off or released and movable forward to a position in which the forward edge of the guide-sheet projects to a guiding position at the front of the platen beyond the paper-apron and above the printing line for guiding a worksheet inserted downwardly at the front of the platen between the platen and said guidesheet, a carrier to which the rear edge of the guide-sheet is attached, a castoff device for the feed-rolls, an operating handle forming a finger-piece, operating connections between the operating handle and the cast-off device for casting ofithe feed-rolls during the initial part of the movement of the operating handle, and operating connections between the operating handle and said carrier for withdrawing the guide-sheet after the feed-rolls have been cast oil.

7. In a front-strike typewriting machine, in combination, a rotative platen, a paperapron beneath the platen, releasable feedrolls co-operative with the lower side of the platen, a guide-sheet insertable from the rear between the platen and the paper-apron when the feed-rolls are cast off or released and movable forward to a position in which the forward edge of the guide-sheet projects at the front of the platen beyond the paperapron for guiding a work-sheet inserted downwardly at the front of the platen between the platen and said guidersheet, a carrier to which the rear edge of the guidesheet is attached, and manually-operable mechanism including a finger-piece for first casting off the feed-rolls and then by continued movement of the finger-piece moving said carrier to thrust forward the guide-sheet to its guiding position between the platen and the apron, and adapted by a reverse movement of the finger-piece to withdraw the guide-sheet to its retracted po sition.

8. In a front-strike typewriting machine, in combination, a rotative platen, a paperapron beneath the platen, releasable feedrolls co-operative with the lower side of the platen, a guide-sheet insertable from the rear between the platen and the paper-apron when the feed-rolls are cast off or released and movable forward to a position in which the forward edge of the guide-sheet pro ects at the front of the platen beyond the paperapron and above the printing line for guiding a work-sheet inserted downwardly at the front of the platen between the platen and said guide-sheet, a carrier to which the rear edge of the guide-sheet is attached, a cast-0d device for the feed-rolls, an operating member connected to said carrier for inserting or withdrawing the guide-sheet, and a fingerpiece connected to the cast-off device for casting off the feed-rolls during the initial part of its movement and having a lostmo tion connection to said operatin member for subsequently withdrawing the guidesheet after the feed-rolls have been cast 0d.

9. In a front-strike typewriting machine, in combination, a rota-tive platen, a platenframe having end walls in which the platen is journaled, a downwardly and forwardly inclined rear paper-table forming a part of the platen-frame, a curved paper-apron beneaththe pla-nten forming a forward continuation of the rear paper-table, a guidesheet overlying the rear paper-table and insertable' at its forward edge between the platen and the paper'apron and movable forward to a position in which its forward edge projects at the front of the platen beyond the paper-apron and above the print-in line, a carrier-bar above the rear paper-tab e and to which the rear edge of the guide-sheet is attached, a pair of racks gu ded. on the platenframe at each side of the machine and to which the ends of the carrier-bar are secured,

gears engaging the racks, a transverse shaft carrying the gears and journaled on the platen-frame, an operating gear fixed upon one end of said shaft, an operating arm pivoted upon one of the end walls of the platenframe and having gear-teeth engageable with said operating gear, and manually-operable means including a finger-piece for rocking the operating arm for thereby thrusting forward the guide-sheet to its guiding position between the platen and the apron or for withdrawing the guide-sheet to the retracted position.

10. In a front-strike typewriting machine, in combination, a rotative platen, a platenframe having end walls in which the platen is journaled, a downwardly and forwardly inclined rear paper-table forming a part of the platen-frame, a curved paper-apron beneath the platen forming a. forward eontinuation of the rear paper table, a guidesheetoverlying the rear paper-table and insertable at its forward edge between the platen and the paper-apron and movable forward to a position in which its forward edge projects beyond the paper-apron and above the printing line, a carrier-bar above the rear paper-table and to which the rear edge of the guide-sheet is attached, a pair of racits guided the platen-frame at each s l, of the l cnine and to which the ends the carriermar are secured, gears engaging Paisntd j zma g 14, 1923. T S N wiLLm vz F. HELMOND, or iziusyrz os n, CONNECTICUT, ASSEGEIOE T0 UNDERVJGOD' TYPEWRITEB GOIkIPANlOFNEW YORK, N. "51., CDEPORATIUN OF DELAWARE.

' TYPEW'RITING MACEZINE.

Application filed August 18, 192i. Senal mf wazls.

a flexible temporary sheet-guide normally in tracted position durin the feeding around a retracted position, manually-controlled the platen of the sheet introduced by the aid means connected to said temporary sheetof said temporary guide.

guide to advance it up in front of the platen, JOHN A. WHERRY. 5 and to retract said temporary sheet-guide in- Witnesses:

dependently of the sheet introduced thereby, ARTHUR Common,

and means to hold said sheet-guide in re- A. C. BOSWELL.

riage as a unit.

be understood that the perpendicular side walls of the 1 cess or well 7 limit the out- Ward expansion of the yieldable or deform-- able ring 15, and that this greatly helpsin causing th s ring to be contracted inwardly to force its material between the screwthreads of the stem part 12 ofthe stud 8, as

. part 12.

The rollerdevice f the present invention as so far described,is now a complete article or unitary device capable of attachment to and detachment from the typewriter-car- In attaching this unitary roller-device of the present invention, the projecting screw-threaded stem part 12 of the stud 8 is screwed into an interiorly screw-threaded opening or hole 17 provided in the front of the front rail or bar 18 of the typewriter-carriage 19, until the outer surface of the rearward-bearing cone 4i is clamped tightly against the forward finished vertical surface 20 of the front bar 18, thereby to secure 7 the assembled unitary roller-device firmly in place in operative position for the peripheral roller part 1 to run upon the usual transverse rod or track ,rail 21 which is supported in the usual way by the typewriter-frame 22.

Any time it is desired, or should become necessary to take up endplay of the bearing balls 5, which may develop or increase with the use of'the machine, this may be done merely by turning up or tightening the screw-threaded attaching stud 8 on the can riage bar 18. *VVhen'the attaching screw or stud 8 is tightened on the carriage-bar 18, the yieldable plug or collar 1 1 will yield to permit the bearing cones 3 and 1 to be drawn more'closely together, for taking up the end play of the bearing balls 5, the conespacing member 13 at the same time yield: ing and becoming flattened or reduced in thickness. It is to he noted that the yielding ofthe yieldable cone-retaining plug or collar 1a is facilitated bythe presence of the slight recess or countersink 16 which is provided in the rear or outer face of the cone 4;, outward from the yieldable plug or collar lL.

Preferably, the ring or annulus 15 from which the cone-retaining plug or collar 14 is formed, should be of somewhat softer material thanthe cone-spacer 13, so as toavoid jamming the cones 8 and 4 too tightly against the balls 5 when pressure is brought to bear on this ring 15 to form therefrom the unifying or cone-retaining plug let.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others. Having thus described my invention, 1 claim: 7 V

1. In a typewriter-carriage supporting and guiding roller-device having a peripheral roller part, a pair of bearing-forming cones, bearingballs retaining said roller part upon said cones, and a headed stud having a stem passing through said cones for securing the roller-device to the typewriter-carriage; the combination of a soft metal collar received con'ipletely into a recess surrounding said stein in the side of the cone non-adjacent to said head and pressel into engaging relation with said stem, said stem being provided with means enabling the engagement of said collar therewith for combining all of said parts into a unitary device for attachment to and detachment from the typewriter-carriage by means of said stud. v

2. In a typewriter-carriage supporting and guiding roller-device having a peripheral roller part, a pair of bearing-forming cones, bearing balls retaining said roller part on said cones and a headed stud having a screw-threaded stem passing through said cones; the combination of a soft metal collar received completely'into a recess surrounding saidstem in the side of the cone'nonadjacent to said head and pressed into engaging relation with the screw-t-hreads of said stem for combining all of said parts into a unitary device for attachment to'and detachment from the typewriter-carriage by means of said screw-threaded stud.

3.111 a typewritei carriage supporting and guiding roller-device having a periphoral roller part a pair of spaced. bearingforming cones, bearing balls retaining said roller part on said cones, and a headed stud having a screw threaded stem passing through said cones; the combination of a soft metal collar received completely into a recess surrounding said stem in the side the cone non-adjacent to said head and pressed into engaging relation with the screw-threads of said stem for combining all of said parts into a unitary device for attachment to and detachment from the type writer-carriage by means of. said screwthreaded stud, the yieldability of said collar enabling play of the balls to be taken up by tightening the screw-threaded stud on the carriage for bringing the spaced cones more closely together.

4. In a typewritercarriage supporting and guiding roller-device having a peripheral roller part, a pair ofspaced bearingforming cones, bearing balls retaining said roller part on said cones and headed stud having a screw -'threaded stem passing through said cones; the combination of a soft metal collar lGCQlVGCl' completely into a recess surrounding said stem in the side of the cone llOn-EIClJtICBIll) to said head and pressed into engaging relat on with the stud on the carriage for bringing the spaced cones more closely together.

In a typewriter-carriage 'supp'ortlng and guiding rolle1.'-device having a peripheral' roller part, a pair of spaced bearing-forming cones,bearing balls retaining said rollerpart on said cones, a yieldabl'e cone-spacer between said cones, and a headed stud having a screw-threaded stem passing through said cones and said cone-spacer; the combination of a soft metal collar received completely into a recess surrounding said stem in the side of the cone non-adjacent to said head and pressed into engaging relation with the screw-threads oi said stem tor combiningall of said parts into a unitary device for attachment to and detachment from the typewriter-carriage by 'IDGEIDS of said screw-threaded stud, the yieldahility of said collar and oil said cone-spacer enabling play of the balls to be taken up by tightening the screw-threaded stud on the carriage for bringing the cones more closely together.

6. In a typewriter-carriage supporting and guiding roller-device having a peripheral roller part, a pair ot'bearing-forming cones, bearingballs retaining said roller part upon said cones, and a hez'tdedstud having a screw-threaded stem passing through said cones; the combination of asot't metal plug received completely into a recess surrounding said stem in the side of said cone non-adjacent to said head and pressed into engaging relation with the screw-threads of said stem and into gripping relation with the side walls of said recess, the side walls of said recess being of abrupt formation to enable said gripping relation with said sott metal plug, said plug combining all of said parts into a unitary device for attachment to and detachment from the typewriter-carriage by means oi, said screwthrea'ded stud. V

7. In a typewliter-carriage supporting and guiding roller-device having a pcripheral roller part, a pair of spacedbearing-tormi'ng cones, bearing 7 balls retaining said roller part upon said cones, and a headed stud having a screw threaded stein passing through said cone-s; the combination of a soft metal plug received coinpletely'into a recess surrounding said stem in the side oi? said cone non-adjacent to said head and pressed into engaging relation with the relation with said soft metalplug,'said plug combining all of said parts into a unitary device for attachment to and detachment from the typewriter-carriage by means of said screw-threaded stud, said softmetal plug-being of less thickness than the depth of the recess in 'which it is contained, the

yieldability of said plug enabling play oi said balls to be taken up by tighteningthe screw-threaded stud on the typewriter-car riage for" bringing the spaced cones more closely togethe 8.11s a typewritergcarriage supporting and guiding roller-device having a peripheral roller part, a parrot spaced'bearing forming cones bearing halls retaining said roller part upon said cones, a yieldab'le cone spacer between said cones, and a headed stud .havingia screw-threaded stem passing through said cones and said conespacer; the combination of a soft metalfplug received completely into a recess surrounding said stein in the side of said cone non-adjacent to said head and pressed into engaging relation with the serewthr'eads of said stem and into gripping relation with the side walls of said recess, the side walls of said recess being of abrupt formation to enable said gripping relation with said soft metal plug, said .plug combining allot said parts into a unitary device for attachment-to and detachment from the typewriter-carriage by means of said screw-threaded stud, the yieldability of said plug and otsaid conespacer enabling play of said ballsto be taken up by tightening the screw-threaded stud on the typewriter-carriage for bringing the cones more closely' together. 7

9. A typewriter-carriage supporting and guiding roller-device, comprising a carriage supporting roller, apair of spaced bearing cones, bearing balls retaining the roller upon the cones, thecones having countersunk recesses at the outer-sides thereof, a stud upon which the cones aremou'nted and having a cone-retaining head received into the recess in one of'the cones and having a screwthreade-d stem projecting beyond the outer face of the other cone ,ancl a cone-retaining soft metal collar in therecess in the latter cone and pressed into engagement with the screw-threaded stem for combining all of stud, the yieldability' of the, "soft metal collar providing for taking up s lay-er the'bearing balls by tightening the screw-threaded stud on the typewriter-carriagev 10. A typewriter-carriage supporting and guiding roller-device, comprising a carriagesupporting roller a pair of spaced bearing cones, bearing balls retaining the roller upon the cones, a yieldable cone-spacer interposed between the cones, the cones having similar countersunk recesses at the outer sides thereof, said recesses having abrupt side walls, a stud upon which the cones and cone-spacer are mounted and having a cone-retaining head received into the recess in one of the cones and having a screw-threaded stem projecting beyond the outer face of the other cone and a soft metal plug in the recess in the latter cone and pressed into engaging relation with the screw-threads of the stem and into gripping relation with the side walls of the recess for combining all of said parts to form a unit which may be attached to or detached from the typewriter-carriage by means of the screw-threaded stud, the

yieldability of the plug and 01 the conespacer providing for taking up play of the bearing balls by tightening the screw-threaded stud on the typewriter-carriage.

11. A typewritencarriage supporting and guiding roller-device, comprising a carriagesupporting roller provided with an interior ball-receiving groove, a pair of bearing forming cones co-operating with said groove to form a raceway, a set of bearing balls in the raceway, a screw upon which said,

cones are mounted and having a retaining head at the outer side of one of said cones, the other one of said cones being provided with a countersunk recess in the outer side thereof surrounding the screw-threaded stem of said screw, and a soft metal cone-retaining collar within said recess and'pressed into engaging relation with the screwthreads of said screw for combining all of said as sembled parts to form a unitary device which may be attachedto or detached from the typewriter-carriage by means of said screw.

12. A typewriter-carriage supporting and guiding roller-device comprising a carriage supporting roller provided with an interior ball-receiving groove, a pair of bearingfornnng cones co-operating with said groove to form a raceway, a set of hearing balls in the raceway, said cones having similar countersunk recesses in the outer sides thereof, screw upon which said cones are meant ed and having a retaining head received into the recess in one of said cones and having a screw-threaded stem projecting beyond the outer face of the other of said cones, an annular cone-r taining solt rnetal plug within said remainingrecess and pressed into engaging relation with the SCI-J\J1lii1IGLLilS of the stem or said screw, and rieldahle concspacer surrounding the stem of the screw between said cones, all of said assembled parts forming a unitary device held together by said screw and plug and which may be at tached to or detached from the typewritercarriage by means of said screw, said yield able plug and yieldable spacer providing 1 01 taking up play of the bearing balls by t' 'hl ening said screw on the typewriter-carriage.

13. In a typewriter-mirriage supporting and guiding roller-device, the method oi retaining a pair of bearing cones upon the screw-threaded stem of a headed attaching stud, consisting in countersinlring a soft metal collar for said stein into the adjacent cone, and then forcing the material of said soft metal collar into iuterengaging locking relation with the screw-threads of said stem.

14. In a typewriter-carriage supporting and guiding rollerdevice, the method oifretaining a pair of bearing cones upon the screw-threaded stem of a headed attaching stud, consisting in sliding an annular sott i'netal plug over the screw-threaded stem and inserting it into a recess in theudjacent cone, and then bringing pressure to bear upon said plug to expand the plug to it in the recess and at the same time to contract the opening in the plug to rorce the soft metal of the plug inward into inter-engaging locking engagement with the screw-threads of the stem.

lVlLLIAM F. HELMOND. Witnesses:

VVILLLAIJ P. SMITH, EDWARD AMERMAN. 

